Results 91 to 100 of about 702,295 (333)

Constrained isentropic models of tropospheric dynamics [PDF]

open access: yes, 2003
A two-layer isentropic model consisting of a tropospheric and a stratospheric layer is simplified using perturbation analysis while preserving the Hamiltonian structure.
Bokhove, O., Verkley, W.T.M.
core   +1 more source

On the distribution and swim pressure of run-and-tumble particles in confinement [PDF]

open access: yes, 2015
The spatial and orientational distribution in a dilute active suspension of non-Brownian run-and-tumble spherical swimmers confined between two planar hard walls is calculated theoretically. Using a kinetic model based on coupled bulk/surface probability
Alonso-Matilla, Roberto   +2 more
core   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Threshold dependence on active-layer thickness in InGaAsP/InP d.h. lasers

open access: yesElectronics Letters, 1978
Room-temperature threshold current density Jth against active-layer thickness d is reported for pulsed InGaAsP/InP double-heterostructure lasers operating at wavelengths near 1.23 μm. For d ≈ 1 μm, Jth/d is 5.0 kA cm−2 μm−1, whereas the lowest threshold is 1.6 kA cm−2 for d ≈ 0.2 μm.
R.E. Nahory, M.A. Pollack
openaire   +1 more source

Improving TFT Device Performance by Changing the Thickness of the LZTO/ZTO Dual Active Layer

open access: yesMicromachines
The primary objective of this research paper is to explore strategies for enhancing the electrical performance of dual active layer thin film transistors (TFTs) utilizing LZTO/ZTO as the bilayer architecture.
Liang Guo   +5 more
doaj   +1 more source

Fischer-Tropsch synthesis in microchannels [PDF]

open access: yes, 2011
Different metallic supports (aluminum foams of 40ppi, honeycomb monolith and micromonolith of 350 and 1180cpsi, respectively) have been loaded with a 20%Co-0.5%Re/γ-Al2O3 catalyst by the washcoating method.
Almeida, Luis C.   +7 more
core   +1 more source

A Thermodynamic 3D Model for the Simulation of Diffusion‐Controlled Alloying Processes in Heterogeneous Material Structures

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer   +3 more
wiley   +1 more source

The use of sublimable chlorotricarbonyl bis(phenylimino)acenaphthene rhenium(I) complexes as photosensitizers in bulk-heterojunction photovoltaic devices [PDF]

open access: yes, 2009
A series of sublimable substituted chlorotricarbonyl bis(phenylimino)acenaphthene rhenium(I) complexes was synthesized and used in the fabrication of photovoltaic devices. The hole and electron carrier mobilities of these complexes are in the order of 10-
Chan, WK   +5 more
core   +1 more source

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling   +2 more
wiley   +1 more source

Semitransparent Polymer Solar Cells Based on Liquid Crystal Reflectors

open access: yesInternational Journal of Photoenergy, 2014
The effects of liquid crystal (LC) reflectors on semitransparent polymer solar cells (PSCs) were investigated in this paper. By improving the cathode, we manufactured semitransparent PSCs based on the conventional PSCs.
Shaopeng Yang   +7 more
doaj   +1 more source

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